Pipe-wrench.



PATENTED NOV. 19, 1907.

R. PARMELBE.

.PIPE WRENCH. APPLIOATION FILED SEPT. 21,1005.

I NI E STATES PATENT OFFIOE.

BOY, PARMELEE, 0F cIIIcAeo; ILLINOIs, As sIeNon 'ro PARMELEE WRENCHCOMPANY, OF

, CHICAGO, ILLINOIS, ACORPORATION OF ILLINOIS.

PIPE-WRENCH.

Specification of Letters Patent.

Patented Nov. 19, 1907. 5

Application filed September 21. 1905." Serial No- 279.48'l.

To an whom "it may concern: y

Be it known that I, ROY PARMELEE, azciti zen of the United States,residing at Chicago, in the county of Cook and State of Illinois,

have invented certain new and useful Improvement's in Pipe-Wrenches, ofwhich the I claimed 11). said Parmelee patent and the Obj ect is toprovide improved means for locking the girth to the fulcrum piece onwhich one end of the girth is fulcrumed, the features of advantage andutility of such improved means being apparent from the descriptionhereinafter given.

Figure l is an elevation of my improvedplpe wrench In one position;

another posltion; Fig. 3 a detailed view of In thefaccompanying drawingthe head or abutment 7; Fig. 4 an elevation of a portion of a pipewrench illustrating a 'modified form of construction; and Fig'. 5 a

perspective of the adjusted sleeve or nut of the construction shown inFig. 3 and Figs. 6 and 7 detailed views of a modified form ofconstruction for the operation of the head or abutment.

The pipe wrench, as herein shown, compn'ses having at its inner end afulcrum piece 2 on which is fulcrumed the girth which in the presentinstance is composed of three see tions, to-wit, the base section3,middle section 4 and the end or lip section 5. The lip section, in thischaracter of pipe wrench, Is arranged to, engage and bear against ashoulder 6 formed on'the fulcrum piece whereby the girth is adapted totightly clamp a pipe or the like which is to be operated upon.

The purpose of my present invention is to provide improved means,cooperating with the base section 3 of the girth in such manner as toprevent disengagement of the girth from the pi e occasioned through anydisengagement o the lip section of the girth from the shoulder 6 andalso to grip the wrench on the pipe. In the present Instance such meanscomprises a movable head or abut- Fig. 2 a similar view thereof inessentially a handle proper marked 1 -1 and 2.

portion of the fulcrum'piece and to be pro jected, by manual operation,against the base section 4. As herein shown and by preference the basesection is formed with two parallel ribs 3 and in order to cooperatetherewith said head or abutment 7 is formed with a recessed middleportion so as to form projecting end portions 7 arranged to beardirectly against and to engage said ribs 3. In this manner when the heador abutment 7 is projected against the base section 3, in the' mannerhereinafter described, such base section is held securely againstdisplacement by a pressure exerted at twodifferent oints on opposltesides of Its central longitu al line that Is on opposlte sldes of thecentral longiment 7 arranged to slide upon a recessed I tudinal axis ofthe girth when viewed as in Fig. 2, and at the same time, the wrench istightly gripped onto the pipe, inasmuch as the pressure of themovablehead is exerted against the girth at a point on one side of the plvotalpoint or pin 8 of its base section. As

'above explained, the pressure of the movable piece or head is exertedat two points located on either side of a plane assing through thelongitudinal axis of the andle and at right angles to the lon itudinalaxis of the pipe operated upon (see Fig. 2), and also located on oneside of the pivotal axis of the base section of the girth (see Figs. 1,2 and '6).

In order to manually operate this head or abutment 7 a sleeve 9 isrovided which in the form of construction 1 lustrated in Figs. 1 and 2extends substantially the full length of the handle proper but which inthe modification of Figs. 4 and 5 and also of Figs. 6 and 7, extendsonly part-Way thereof, the length of the sleeve being immaterial in thebroader aspect of my invention but preferably of the same length as thehandle as shown in Figs.

This sleeve has a pin and slot connection with the handle proper, in theresent instance the sleeve having an ob 'que slot 10 which receives astud or pin 11 in the handle. By reason of this connection beasmuch asthe-shoulder 7 of such head or abutment is arranged inthe path ofmovement of the inner end of the sleeve. In orderto provide a properbearin for the sliding movement of the head or a utment, the same has aflat shank or stem portion 7 received and arranged to slide in alongitudinal groove or channel 1 in the handle, Fig. 1.

, Thus when the sleeve is turned in one direction the same is movedlongitudinally and the head or abutment thereby. moved towards the'basesection of the girth to hold the latter against displacement and tothereby prevent disengagement of the li section.

Consequentlyby sim ly turning t e sleeve the fixed relation of a l ofthe sections of the girth upon the pi e is maintained.

Referrin to t e modified form of construction ilustrated'in Figs. 4 and5,. this construction is substantially the same as that alreadydescribed with thefexception of the length of the sleeve which hereterminates where the other sleeve had its pin and slot connection withthe handle. According to yet so far as my invention is broadlyconsidsleeve 13 the head is caused to move in one ered, the head orabutment 7 may be 0 erated' in a slightly different manner as ilustratedin Figs. 6 and 7 wherein a sleeve 13 is shown as externally screwthreaded to engage screw threads formed upon the handle and adapted topress upon the head or abutment 14 which is similar to the head 7 withthe exception of a hole 15 to receive a pin 16 in the sleeve 13. Byturning or rotating the direction or the other, according to thedirection of rotation, with the same results as in respect to the otherforms of construction.

By preference, the inner ends of the ribs 3 are enlarged so as toprovide shoulders or f humps against which the head or abutment isarranged to press, the point of contact be-' in as indicated clearly in.Fig. 1, on one si e of the ivotal point or axis of the base section 3of the girth, with the result that when the head or abutment 7 is forcedagainst the girth, in the manner already explained, such girthis notonly prevented from unlocking, but is also gripped the more securely andeffectively upon the pipe which is encompassed by the girth. Moreover,al-

though my invention is herein shown as applied to wrenches of the girthtype and for convenience in description has been illustrated anddescribed in connection with such type of wrench, yet it will beunderstood that my invention is not limited thereto, but that itmay beapplied to other forms of wrenches having a swinging on pivoted jawsection.

I claim; 1. A pipe wrench comprising 'a hand portion, a girth fulcrumedthereon and adapted to engage the handle portion with its free end,and-means for preventing disengage ment of the. girth from the pipe orthe like operated upon, consisting of a head movable longitudinally ofthe handle and arranged to engage the girth on either side of a planepassing through the longitudinal axis'of the upon consisting of a headmovable longitudinally of the handle having rojecting bearing portionson either side oi its longitudinal axis and adapted to' engage saidgirth on either side of a planepassing through the longitudinal axis ofthe handle and at right angles to the longitudinal axis of the pipe.

3. A pipe wrench comprising a handle, a sectional girth fulcrumedthereon and adapted to engage the handle portion with its free end, andmeans for preventing disengagement ofthe girth from the pipe or the likeoperated u on comprising a head movable longitudina ly of the handle andhaving projecting bearing portions arranged to engage and press againstone section of the girth on either side of a plane passing through thelongitudinal axis of the pipe, the engaged section of the girth havingprojecting portions or ribs which are contacted by said pro ectingportions of the head.

4. A ipe wrench comprising a handle, a girth fu crumed thereon andadapted to engage the handle portion with its free end, and means forpreventing disengagement of the girth from the pipe or the like operatedupon,

comprising a head arranged to be projected against said girth to movethe same on its fulcrum and provided with a shank or stem slidinglongitudinally on the. handle, and a sleeve around the handle andcooperating with said head, whereby the girth is locked to the pi e.

5. ipe wrench comprisin a handle, a girth fuihrumed'thereonand a aptedto engage the handle with its free end, and means for preventingdisengagement of the girth from the pipe or the like operated on,comprising a head arranged to be projected against said girth andprovided with a shank or stem slidinglongitudinally on the handle, saidhandle having a longitudinal groove receiving said shank, and a sleevearound the handle and cooperating with said head.

6. A pipe Wrench comprising a sectional girth, a head on which the basesection of the v or pin projecting fulcrumed and which is engaged by"the free end thereof when applied to the pipe or the like operateduponfa movable member adapted to be pressed against such base sectiontogrip the girth on to thepipe, and a rotatable eeve cooperating withsuch memher to so move the same, said member being arranged to beplrojected against said base section on one e of its fulcrum.

7 ,A wrench comprising a handle, a section crum thereon, the basesection 3 of the giurlth having projections 3 at one side of the,crumthei'eof'and the outer section coopfigating with the handle when thepipe or the e is engaged, a head 7 arran ed to slide u on the exteriorof the handle and to contact t e said projections, and a sleeve aroundthe handle and arranged to move longitudinally to force the head againstthe projections.

8. A ipe wrench comprising a handl girth gage the handle with its freeend when the pipe or the like operated upon is en aged thereby, andmeans for preventing isengagement of the girth from the pipe comprismg ahead arranged to be 1projected against said girth and provided wit ashank or stem sliding longitudinally on the handle, a stud fromthehandle; and a with said stud to cause the sleeve upon partial rotationof the stem, said head being sleeve cooperating arranged in the-path oflongitudinal movement, of the sleeve.

- 9. A upipe wrench comprising a handle, a girth f crumed thereon andarranged to engage the same as to its free end when applied to the ipeor the like operated upon, and means or preventing disengagement of thegirth from the pipe comprising 'a head arranged to bet'pro ected againstsaid girth and providedwi ashank or stem sliding longicrumed thereon anda apte'd to entudinall on the handle and a sleeve around the ban e andhaving a pin-and-slot connection with the handle to cause longitudinalmovement of such sleeve upon partial rotation of the latter, said headbeing arranged in the path of longitudinal movement of the sleeve.

10. A pipe wrench comprising a handle, a girth fulcrumed thereon andarranged to engage the same as to its free end when applied to thepipeor the like operated upon, and means or preventing disengagement ofthe girth from the pipe comprising a head arranged to be ro ectedagainst said girth and provided wit a shank or stem slidinglongitudinall; on the handle, a sleeve arranged around the handle andhaving an obli ue slot and a pin projecting from the ban 1e and passingthrou h the slot, whereby partial rotation of the s eeve moves thelatter longitu dinally of the handle,- said head being arranged in thepath of longitudinal movement of the sleeve.

' 11. A pipe wrench comprising a handle, a girth fulcrumed thereon andarranged to engage the same as to its free end when applied to the pipeor the like operated upon, and means or preventing disengagement of thegirth from the ipe comprising a head arranged to be ro ected againstsaid girth and provided wit- -a shank or stem sliding longitudinally onthe handle and a sleeve arranged around and substantially of the samelength as the sleeve and having a pin-and-slot connection with thehandle to cause longitudinal movement, said head being arranged in thepath of longitudinal movement of the sleeve.

' ROY PARMELEE. Witnesses S. E. HIBBEN, V Loms B. ERWIN.

